Azure Front Door Premium Now Supports Mutual TLS, Generally Available
If you expose sensitive APIs or partner-facing apps through Azure Front Door, you no longer need to push client certificate checks down to your origin. Mutual TLS (mTLS) is now generally available on Azure Front Door Premium.
Also known as client certificate authentication, mTLS lets you use X.509 client certificates to help protect applications and APIs in scenarios such as business-to-business integrations, Internet of Things and financial services. The edge verifies who is connecting before traffic ever reaches your backend, which tightens your security posture without extra plumbing in every app.
Worth a look if you front critical workloads with Front Door Premium. Dive into the full technical breakdown here